Rechargeable dry cell.



M. G. YOUNG.

RECHARGEABLE DRY CELL.

,VPUCMIGN man SEPT. H. 1511.

Patented July 9, 1918.

INVENTR 47 GYOu/n'g.

UNITED STATES PATENT OFFICE.

MATTHEW G. YOUNG, OF GENEVA, OHIO.

RECHARGEABLE mw CELL.

Application filed September 11, 1917.

is the, provision of a cell in which the shcllv or casing can be easilyand quickly taken Cil apart or put together so that after the cell isexhausted the '/.inc shell or casing can be removed and cleaned andagain pnt together so as to be. refilled.

With such objects in view, and others which will appear as thedescription proceeds, the invention comprises various novel features ot'construction and arrangement of parts which will be set forth withpartienlarity in the following description and claims appended hereto,

In the aiaannpanying drawing, which illustrates one einbodimeiit of theinvention and wherein similar characters of reference indicatecorresponuling parts in all the views1 Figure, 1 is a central verticalsection of the coll with `an intermediate portion .broken away, thesection being taken on the line 1 1, Fig. 2;

Fig. 2 is a` horizontal section on the line 2-2, Fig. l; and

Fig. f3 is a. detail view showing the, manner of holding the seamstogether and sealing the same.

Referring to the drawing, l designates the zine body of the casing or.shell and 2 the zinc bottom cap therefor. The body in made of a striprolled into cylindrical form with the edge 3 entered in a pocket 4formed i by the'edge 5 and a strip of metal G soldered to the, bodypiece. At a plurality of points drops of solder 7 serve to hold theedges of the seam together, and to prevent leakage sealing wax 8 isfilled into the seam. The bottoni cap 2 is held by solder S) at aplurality of points and the joint or seam be-4 tween thc cap and thebodyis closed by sealingr wax 10. The whole easing or shell is coveredby a paper wrapper (not shown) in the usual manner.

Specification of Letters Patent.

i solder' and Patented July t), 1918.

seria] No. 190.755.

Within the shell or casing is a lining.;r 1l. of absorbent paper whichis Saturated in a battery fluid composed of one pound of salsannnoniacand one pound of chlorid ol zinc crystals dissolved in distilled waterin such quantity as to produce a solution of 32D Baume. ln the bottoniot' the casing may be placed a wooden block l2 coated with paraliin. Thecarbon core i3 is placed in the center of the shell and the activematerial 1l is filled around the farben or element lil. The activematerial is a carbon manganese mixture consisting of powdered peroxid ormanganese and carbon of equal parts. This powder is moistened with-ftlie battery fluid shove mentioned and is After the cell is exhaustedthe sealingi wax S and 1U is removed. as are also the drops of solder'.'l`he '/.inc canthen be re moved without diatnrbing,r the centralelements and then cleaned or reversed. The absorbent paper 11 ismoistened with the battery 'fluid and after a coating of paste isapplied to the. lnoistened'paper the zinc is put back, it, bei ngpreferable to tie a string,` around the. body l of the casing to con!veniently hohl the seam while the solder and wax are being applied. Thebottom cap is then applied and secured in place by the eax. The wax ispreferably made of ompart resin, one part tar and one part soap i ione,and the paste which is ap plied to the paper before the zine shell isreplaced is compf i ed of five parts plaster of' laris, and one part`wheat flour moistened with enough of the battery solution to make a thinpaste.

It is to be understood that the zinc is of such quality and weight, thatthe chemical elements of the cell will be exhausted first and leavesufficient strength in the zinc for the .second charge of chemicals.

From thel foregoing description taken in connection with theaccompanying drawing the advantages of the, construction an method ofoperation will be readily understood by those skilled in the ,art towhich the invent-ion appertains, and While I have described theprinciple of operation', together with the article which I now considerto be the best embodiment there-of, I desire to have it understood thatthe article 2. A dry @di im'luzingg 1L charge uf chem'b @alfa und :1.mll :Munic-L in he, tux-rml inside out when the mm1 allarga LS mnsmxd,:Quill sl m11 boing umd@ of a. hach nl' zinc, om: and nf th@ Sheet wing{'wmrfLl with in groove throughoub its length tu Iuueivc the other end.vhvu thu shell ntufly forlned and als() when he alu-lil is turned insideout', means im? hmukaby seailng the joint, be,- twsn Mw ends of thesheet, `md a detachable meml cap [iti/:d over the bottom of the

